Докажите тождество (3m-7)•0,6-0,8(4m-5)-(-1,7-1,4m)=1,5

Question

Докажите тождество (3m-7)•0,6-0,8(4m-5)-(-1,7-1,4m)=1,5

Answer 1

(3m-7)•0, 6-0, 8(4m-5)-(-1, 7-1, 4m)=1, 5//////////////1, 8m-4, 2-3, 2m+4+1, 7+1, 4m=1, 5//////////////3, 2m-3, 2m+1, 5=1, 5/////////////1, 5=1, 5